He is on the Board of Directors at Airgas, Inc. and Air Liquide Investissements d'Avenir et de Démonstration SA. Mr. Darchis was previously employed as Vice President-Engineering & Construction by Air Liquide Italia SpA, Chairman-Supervisory Board by Lurgi AG, and Senior VP-Engineering, Construction & Research by Société Ivoirienne d'Oxygène & d'Acétylène SA.